Because every lash matters, Sephora Collection is launching a waterproof version of Big By Definition Mascara for fuller, waterproof lashes.; Results: Thick, defined, waterproof. This mascara separates lashes one by one with a multi-dimensional brush.; Lash definition makes them thicker.; Big By Definition Waterproof Mascara instantly separates and defines lashes thanks to the different-sized fibers in its brush.; Each one of these fibers captures a single lash, making it the ideal mascara for lower and smaller lashes.; Makeup results: Shows off and highlights every lash, making your lashes 151% longer and fuller (1); Makeup is waterproof thanks to the mascara's waterproof formula.; This mascara can be layered, thickens lashes, and gives a result 3.6x thicker (2). Thanks to this waterproof formula, Big By Definition is not just a separating mascara.; It goes further to give your eyes a dramatic look.; Define your lashes beautifully with this waterproof version of the cult-favorite Big by Definition mascara.; With its buildable, long-wearing formula, this Sephora Collection mascara adds 3.6x thicker volume (2).; This waterproof vegan mascara resists water, heat, and humidity.; It won't run, smudge, or flake.; Formulated with plant wax, this lightweight, stretchable mascara coats each lash from root to tip, smoothing and conditioning to perfectly define each lash.; It delivers buildable results for extra volume with every stroke for an ultra-black look with no clumps.; The lash-separating vegan mascara(3) formula is enriched with plant proteins that are similar in structure to keratin.; This long-wearing mascara won't flake or flake.; It stays put all day, but is easy to remove if you want.; (1) Scientifically measured on 24 false lashes after 10 brush strokes.; (2) Scientifically measured on 24 false lashes after 20 brush strokes.; (3) Made without animal-derived ingredients.